/**
 * #      面试题 10.11
 * 名称   峰与谷
 * 链接   https://leetcode-cn.com/problems/peaks-and-valleys-lcci
 * 题解   [60](https://leetcode-cn.com/problems/peaks-and-valleys-lcci/solution)
 * 通过率 66.3%
 * 难道   中等
 */

